2/ Kt qu nghin cu v kho stThis paper presents the principle of membrane seal on plastic bottles, research design and prototype models capping aluminum lamination on the plastic bottle. During the fabrication process the authors targeted a product with applicability, low cost, compact texture but still meet the technical requirements of the closure membrane. Through practical products to meet the demand, stable operation, still operating unit can gian.San the application at the base of small, medium suitable for a variety of products. 2.1/ Cu to mng seal:Mng seal l mt mng ghp c cu to gm c 3 lp chnh:

Lp giy lt c tc dng ngn mng nhm dnh vo np chai dy t 1- 1,5 mmMng nhm vi tc dng tip nhn sng cao tn, hn kn ming chai sau qua trnh dn mng dy khong 0,02mm.Lp mng nha c th l PE/PET/PP/PS di 0,025mm ty thuc vo loi chai nha,lp ny c tc dng nhn nhit t t lp mng nhm sau nng chy kt dnh vi ming chai.2.2. Nguyn l dn mng seal:Dn mng seal nhm da trn nguyn l cm ng in t.Mng nhm c t trong np chai, sau qu trnh vn cht np chai, mng nhm p cht v ming chai, chai c a qua b phn pht sng cao tn, mng nhm di tc dng ca sng cao tn nng ln lm nng chy lp mng nha, lp mng nha chy ra dnh cht vo ming chai.Nhit nng chy ca mt s loi mng nha thng dng:Bng 1: Nhit nng chy ca mng nhaSTTLoi nhaNhit (0C)

1PE (Polyethylen)100-120

2PET (Polyethylen Terephthalate,Polyester))250-270

3PP (Polypropylen)150-180

4PS (Polypropylen)180-200

2.3 C s thit k sn phm:

Hnh 1: Hnh nh sn phm thc t.Cc yu cu khi thc hin sn phm: My thit k nh gn, vn hnh n gin, gi thnh r. B phn ng np cn ng np cht. B phn pht sng lm vic n nh.Chnh v vy my c ch to t Inox m bo bn, s dng cc xilanh kh nn gi chai, dung ng c vn np chai, x dng chip AT89s52 n gin gi thnh r, mch pht sng cao tn c ch to n nh vi hiu sut cao.2.4 Kt cu c kh sn phm:

Hnh 1: Hnh nh sn phm thc t.2.4.1 Bng chuyn:Bng ti c cu to n gin bao gm ng c cn gt nc c sc ko 15kg c gi thnh r v vn hnh n nh.Con ln bng nha gim trng lng cho my, 2.4.2 Khung my:Khung my cn m bo kin c, lm gi gn cc b phn khc nn c lm t Inox vi cng vng cao, chng r rt, ngoi ra cn bo m tnh thm m.Cu trc b iu khin:

1/ Cpu s l trung tm s dng chip vi iu khin AT89s52 ca hng ATMEL vi nhng thng s ni bt nh sau:

Vi iu khin 8 bit, cng sut thp. 8 kbyte, 128byte RAM Chu k ghi xa 10.000 flash 2 b nh thi 8 bit. 210 bit truy xut n tng bit. C kh nng giao tip truyn d liu ni tip. 4 port xut nhp 8 bit. in p cung cp 4.5V-5.5V2/ Khi cch ly quang

Opto pc817 dng truyn tn hiu in bng cch chuyn tn hiu thnh tn hiu quang sau mi truyn tn hiu i, c s dng ngn cc xung in p cao i ngc v cpu x l.

3. Mch cng sut pht sng:

Hnh 1: Hnh nh sn phm thc t.

S dng transistor IGBT(Insulated Gate Bipolar Transistor) l mt linh kin bn dn 3 cc, c kh nng ng ngt nhanh, kh nng chu ti ln.Mch cng sut to xung a vo cun cm pht sng cao tn:

Hnh 1: Hnh nh sn phm thc t.